Finding the Fourth Proportional to 12,970.71, 17,897.09 and 7,936.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,970.71 : 17,897.09 = 7,936.02 : x
2. Step 2: Convert to fraction form
   12,970.71/17,897.09 = 7,936.02/x
3. Step 3: Cross multiply
   12,970.71x = 17,897.09 × 7,936.02
4. Step 4: Simplify right side
   12,970.71x = 142,031,624.50
5. Step 5: Solve for x
   x = 142,031,624.50/12,970.71
6. Step 6: Final answer
   x = 10,950.18